Senior Full-Stack Developer; f​/m​/x

About Data4

Life

We develop secure, standards‑compliant digital health solutions that empower researchers and public health institutions to advance evidence‑based medicine. As a nonprofit supported by the Hasso Plattner Foundation, we build scalable research infrastructures – supporting international standards such as FHIR and OMOP – and collaborate with some of the world's leading clinical institutions.

As a Senior Full‑Stack Engineer, you will work on a medical image annotation application built in collaboration with Mount Sinai Health System in New York. Your code will support clinical researchers working with real patient data at scale.

• Design, build, and ship high‑quality front‑end and back‑end features – writing accessible, performant, maintainable, and well‑tested code.
• Contribute to software design and architecture decisions, and take part in code reviews across the full stack.
• Work closely with designers, QA, and product management as part of an integrated team to deliver well‑crafted, user‑centered software.
• Engage directly with customers and users – joining feedback sessions and user research to build a deep, end‑to‑end understanding of the product and the problems it solves.
• Design with security at the core – shaping authorization concepts and data‑protection architecture from the ground up, including the documentation that supports review and sign‑off by our clinical partners.

• A university degree (M.Sc.) in Computer Science, Software Engineering, or a related discipline.
• 3+ years of professional experience as a software engineer or full‑stack developer, or equivalent experience.
• Strong front‑end skills: deep fluency in HTML, CSS, and JavaScript/Type Script, with hands‑on experience in React or equivalent.
• Solid back‑end experience: proficiency in Go (Golang), Kubernetes, and Docker, or equivalent.
• Experience with relational databases; we use PostgreSQL.
• Professional written and spoken English;
  German language skills a plus.

• High level of personal responsibility and creative freedom.
• Work on socially impactful projects in the healthcare sector.
• Collaboration with leading partners from research, technology, and healthcare.
• A diverse, interdisciplinary, and international team working across three locations (Potsdam, Berlin, and Singapore).
• Flexible working models with the option to work from home.
• Permanent employment contract with 30 days of vacation.
• Attractive employee benefits: private supplementary health insurance, public transport ticket.

We particularly welcome applications from members of the LGBTQI+ community, individuals with a migration background, people of color, and people with disabilities or chronic illnesses. If you require any accommodations or specific assistance during the application or interview process due to a disability, please let us know. We will do our best to support you.